12516227 has 2 divisors, whose sum is σ = 12516228. Its totient is φ = 12516226.

The previous prime is 12516211. The next prime is 12516247. The reversal of 12516227 is 72261521.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12516227 - 2⁴ = 12516211 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12516196 and 12516205.

It is not a weakly prime, because it can be changed into another prime (12516247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6258113 + 6258114.

It is an arithmetic number, because the mean of its divisors is an integer number (6258114).

Almost surely, 2^12516227 is an apocalyptic number.

12516227 is a deficient number, since it is larger than the sum of its proper divisors (1).

12516227 is an equidigital number, since it uses as much as digits as its factorization.

12516227 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1680, while the sum is 26.

The square root of 12516227 is about 3537.8280059946. The cubic root of 12516227 is about 232.1798236719.

Adding to 12516227 its reverse (72261521), we get a palindrome (84777748).

The spelling of 12516227 in words is "twelve million, five hundred sixteen thousand, two hundred twenty-seven".